Answer:
0
Step-by-step explanation:
Since displacement is the distance between the journey starting point and the final point if they both are the same the difference becomes zero and hence the displacement.
Displacement = final point - initial point
(<em>both</em><em> </em><em>are</em><em> </em><em>same</em><em>)</em>
<em>=</em><em> </em>same - same
= 0
Substitute the value of y = 3 into the expression,
7x + 2y = 48
7x + 2(3) = 48
7x = 48 - 6
7x = 42
x = 42/7
x = 6
So, your final answer is 6
Hope this helps!